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Ducati Diavel Service Manual: Checking and adjusting the valve clearances

Ducati Diavel Service Manual / Engine / Cylinder head assemblies / Checks and adjustments / Checking and adjusting the valve clearances

Checking and adjusting the valve clearancesChecking and adjusting the valve clearances


Note

For clarity, the figures show the engine removed from the frame.

Move the piston of the cylinder being checked to tdc of the power stroke: in this condition, all the valves are closed and the timing shafts come in neutral position and, therefore, free to rotate; check to the valve clearance on the cylinder head on which it operates.

Checking the opening clearance

Using a feeler gauge, check the clearance between the opening rocker arm (a) and the lowest point of the camshaft lobe (b), taking care not to compress the rocker arm return spring.

The value must be within the specified ones (sect. 3 - 1.1, Timing system/valves).

If not, remove the opening adjuster (3), as described in paragraph "removing the valves" (sect. 9 - 4.5), And replace it with one of suitable height to obtain the prescribed clearance.

Note

Opening rocker arm shims measuring 1.80 To 3.45 Are available as replacement parts: the size is punched on the shim.

Checking the opening clearance


Checking the closing clearance

Using a feeler gauge, check the clearance between the closing rocker arm (c) and the highest point of the camshaft lobe (d).

The value must be within the specified ones (sect. 3 - 1.1, Timing system/valves).

If not, remove the closing adjuster (1), as described in paragraph "removing the valves" (sect. 9 - 4.5), And replace it with one of suitable height to obtain the prescribed clearance.

Note

Closing rocker arm shims measuring from 2.2 To 4.5 Are available as replacement parts: the size is punched on the shim.

Checking the closing clearance


Checks and adjustments
Closing shim Intake side camshaft Opening shim Exhaust side camshaft Valve Spare parts catalogue Diavel abs cylinder head: timing system Diavel abs vertical cylinder head Diavel a ...

Checking valve lift
Set the engine to the configuration described for the "checking and adjusting the valve clearances", previously indicated. Position the tool 88765.1518 On the cylinder head: the part marked "a" s ...

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*Dynamic safety-critical point; tightening torque must be within nm +/-5%. Note For product specifications and symbols, refer to "product specifications" (sect. 1 - 2). ...

Refitting the hands free
Reassembly is a reversal of the removal procedure: in particular apply prescribed threadlocker to screws (2) and tighten them to a torque of 20 nm +/- 10% (sect. 3 - 3, Frame torque settings). If the hands free button has been previously removed, when refitting it insert the spring (6) on pi ...

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